1-Bit Shift To Right Of N-Bit Data, 1-Bit Shift To Left Of N-Bit Data - Mitsubishi Electric MELSEC-Q/L Programming Manual

1-bit shift to right of n-bit data, 1-bit shift to left of n-bit data

BSFR(P), BSFL(P)
High
Basic
Process
performance
BSFR, BSFL
BSFRP, BSFLP
(D): Head number of the devices to be shifted (bits)
n: Number of devices to which shift is executed (BIN 16 bits)
Setting Internal device
data
Bit

(D)

n
Processing details
■BSFR
• Shifts the data in n points from the device designated by (D) to the right by one bit.
D +(n-1) D +(n-2) D
1 1
+(n-1) +(n-2)
D D D
0 1
Filled with 0
• The device designated by (D)+(n-1) is filled with 0.
■BSFL
• Shifts the data in n points from the device designated by (D) to the left by one bit.
D
Carry flag
D
(SM700)
1
• The device designated by (D) is filled with 0.
7 APPLICATION INSTRUCTIONS
394
7.3 Shift Instructions
Redundant Universal LCPU
R, ZR
Word


n
+2
+(n-3) D D +1
0 1 1
+(n-3) +2
D D +1
1 0 1
+(n-1) +(n-2) +(n-3)
D D
1 1 0
+(n-1) +(n-2) +(n-3)
D D
1 0 0
Command
Command
J\
Bit Word
D
0
Carry flag
D
(SM700)
0
1
+2 +1
D D D
0 1 1
+2 +1
D D D
1 1 0
indicates an instruction symbol of BSFR/BSFL.
D
P
D
U\G Zn
Filled with 0
n
n
Constant Others
K, H

